This presentation will provide an overview of the Steep Channel Toolbox, a practical design resource for steep channel projects supporting fish passage and stream restoration. Dr. André Zimmermann will introduce the basis of the tool, which is grounded in the formation and stability of boulder step-pool channels, and walk through an example problem to highlight key considerations when designing in steep, complex channel environments. Participants will gain insight into how the toolbox can be applied to support stable, functional channel designs.

Dr. Zimmermann is a Principal and Senior Fluvial Geomorphologist with Northwest Hydraulic Consultants (NHC) Ltd. and has spent the past 16 years working alongside engineers to apply his PhD research on steep stream stability to real-world projects. His recent work includes nature-like fishways, channel grade control, and habitat improvement on steep streams. He is also the technical lead for a Washington State Department of Transportation project documenting NHC’s steep stream design approach and developing associated design tools. André serves as an adjunct faculty member in the Department of Geography at the University of British Columbia, where he collaborates with students on a range of applied research projects.